Ioneer (IONR) - Shares outstanding

Number of shares outstanding at the end of 2025: 58,939,388

According to Ioneer's latest financial reports and stock price the company's current number of shares outstanding is 58,939,388. At the end of 2025 the company had 58,939,388 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Ioneer from 2008 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	58.93 M	9.91%
2024	53.62 M	2.23%
2023	52.45 M	4.16%
2022	50.36 M	15.16%
2021	43.73 M	9.53%
2020	39.92 M	8.5%
2019	36.79 M	21.05%
2018	30.39 M	14.63%
2017	26.51 M	76.44%
2016	15.02 M	140.87%
2015	6.23 M	23.9%
2014	5.03 M	26.91%
2013	3.96 M	3.83%
2012	3.82 M	28.87%
2011	2.96 M	57.51%
2010	1.88 M	48.97%
2009	1.26 M	-11.78%
2008	1.43 M

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Number of shares outstanding for Ioneer (IONR)